I am running Firefox 15.0 on a Windows Vista 32-bit machine. After downloading the latest version of Flash Player I get a message that says Adobe Flash Player 11.4 r402 has stopped working. How do I fix this problem?

I just confirmed the problem with Trusteer. (I was impressed with the speed of their on-line chat service.) They are aware of the problem and are presently working on a fix. They will notify me by e-mail when the fix is available. For anyone using Trusteer Rapport who is experiencing this problem, I recommend contacing them to get on their notification list. In the interim, they recommended that I unistall Rapport. I'm actually just using WinPatrol to (temporarily) disable it from starting.

I did have some issues installing the new version. If you have unistalled Rapport already, I wouldn't think you would have to repeat my experience. Here's what I went through:

First I tried to install Rapport (1205.8) in my user account. The install program failed and said I must log in to an Admin account. I logged out of my user account, logged in to my Admin account, and tried again. This time it said I must uninstall on the other (user account) where Rapport was installed. So I logged out of my Admin account and logged in to my user account, uninstalled Rapport (from Control Panel | Programs and Features), logged out of my user account, logged back into my Admin account, and then installed Rapport (1205.8). Next I rebooted and logged in to my user account and tested Adobe Flash Player in Firefox (at http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html). As I said, all was well then.

what is Trusteer Rapport why should i download it is there no patch from adobe to fix the problem my firefox gets slow, and when i see the task manager i find several instances of flash player 11.4. r402 running after ending the task of this process the firefox again gains speed.

do i need to download Trusteer Rapport to fix the problem or should i roll back to flash player 10

I am having the identitical problem after upgrading to Firefox 15.0.1. I have installed, uninstalled, and rebooted at least three times in the last couple of days. Very frustrating. I keep hoping that a fix will be posted that works. I do not have, nor have I ever had 'Trusteer Rapport' installed on my computer. This is a red herring.